2x 150 m swims....put those both on the 6th leg (CPs/non TAs on "wrong" side of water body), that helps pad the trek time up, at least at my swimming speeds. Maybe we can use and abuse the ~50 m rule, park me on the opposite bank, and toss out teammates every 50 m, and have the final person paddle two boats to the flag. Reverse starting leg 7.

The highest point in Parry Sound, the internet tells me, is 120 km away, so perhaps not that. I didn't have a good way to sort by steepness, and caltopo only has those 20 m intervals.

In my limited WT experience, vegetation hasn't been that bad, but we've had a freedom of travel which perhaps this leg doesn't offer. The worst a Michigan race ever gave us was 1.5 km/hour following an undeveloped impoundment shoreline with slow fight on rolling terrain.

Just <3 to just >1 kmph could be a lot of Ontario wilderness. :-(
Logistically it would make sense for this trek to start and end at the same spot to avoid shuttling boats and also as a potential section to drop for 'back half' teams.

If they are moving boats from leg 5 to 7 then that will pretty much squash my guesses above.

I can't imagine they'd move boats - that means vehicle access would which mean bin access not out of line, but no bins. Thankfully many of our local races have been bin free to give us great self-support practice for those long hauls.

Great point re: dropping the brutal trek for short course, hadn't even thought that far yet! Still trying to crunch numbers to get us through full course in 29:59! Third time's the charm!